13... f6h5 The knight heads to f4, an optimistic plan. 14. d2f1  14... h5f4 A new move. 15. f1g3 The problem with moving the black knight to f4 is that it's now difficult to see what to do. There's no sac on h3, and White intends to get the knight to f5. 15... e5d4 This plan worsens Black's position.